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There is no error in that log.

Post a link to your launcher_log.txt from directly after the crash.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

That's the debug.log, but I asked for the launcher_log.txt

Where it is crashing is usually caused by issues with broken jars or mods packaging duplicate jars inside themselves and causing conflicts.

The actual error message is usually logged in that minecraft launcher log.

 

But it's also minecraft 1.18 which isn't supported in this forum anymore.

https://forums.minecraftforge.net/topic/91712-supported-version-directory

Nope, this is 1.20

Edited by warjort

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

Quote

20:55:46.5760360: MinecraftJavaLoggingContext.cpp(52)] Game/game () Info Exception in thread "main" cpw.mods.niofs.union.UnionFileSystem$UncheckedIOException: java.util.zip.ZipException: zip END header not found

[Info: 2023-08-30 20:55:46.5765318: MinecraftJavaLoggingContext.cpp(52)] Game/game () Info Caused by: java.util.zip.ZipException: zip END header not found

-- snip

[Info: 2023-08-30 20:55:46.5784175: MinecraftJavaLoggingContext.cpp(52)] Game/game () Info at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider.createMod(AbstractModProvider.java:38)

As I guessed above, this is a broken mod jar. The error does not say which mod.

If you don't know how to test a jar file is valid using a zip or jar tool, I suggest redownloading your mods.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

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